From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0019B456DE8; Tue, 11 Aug 2026 17:03:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786467831; cv=none; b=FUwQF3gMq01Sf5n33g2Wq1yKv168NTvM4oYVzILAlrL6iXo+wHe3evWQNW+Nz8vQIsUrgSlMzsezd8YhjqT2X82frIMwiHjM7NwRzQHkaa7S8y3xzFv+69EBmhk4lUVqiErABxJcYDALSuTWr8XvzVfVckmIAZLc7Z7ET3+ZuiM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786467831; c=relaxed/simple; bh=WMAFVGNo5GDI1FyvLwMra1OZdedJVdf+v9znczCOPR8=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=aOAE8f+b+JdFN5DY4cpJCx+di5geCBfAbKI11RnonPlzr+0AhnAW8TfXi1VbQErcr0wpwCL2+I3gBZ47rdsDTi4t5mLGGBxY4KDzy1JXEOYw2MoPkkZDNHTZDj6q9UEf2Eno2mL+1zlwnW784YutK/IsKg6aJm1yBe/i3l1750c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=j/JpIADs; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="j/JpIADs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1144F1F000E9; Tue, 11 Aug 2026 17:03:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786467827; bh=cMyTTa5KAjyZtVZZYKXgPBl0VYfKOHY5hZtIr8dRpwY=; h=From:To:Cc:In-Reply-To:References:Subject:Date; b=j/JpIADsBUI1Do9UvT+M2IL3RJVAsIYBy++rjBQHQQHLLM+d5+h9eruafLfp8U1+3 avw4Ti5i5yCFSJXep9tH9anl4xuTsc3VrqEcrfCzu+cIFOCCRtyB9D2UoiywJhksjA WLRgrAfHQFpN2OP5Rt815NVXPUHyXuJ2orgkDHkYLboUDOj8eP6BpRe/H998SWMsit gmTBu5RqqbtIjMgDe/tsslGoo/i0bkiPJcwPWUFAcV5bwWVF3gGKdmvbkO6W3w+je5 Zq+vYrHT+hufTg8FbMjqkDkQ7OC5L6BfgPs4XXTE7kyC/PKLyaTfBZhGvd7WxTxMaK 2h7MBXrF55fsg== From: Vinod Koul To: Jason Yang Cc: Neil Armstrong , Heiko Stuebner , Sebastian Reichel , linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org In-Reply-To: <20260811-dcphy-maxreg-v1-v1-1-aa63f6a63a64@gmail.com> References: <20260811-dcphy-maxreg-v1-v1-1-aa63f6a63a64@gmail.com> Subject: Re: [PATCH] phy: rockchip-samsung-dcphy: fix out-of-range max_register Message-Id: <178646782464.1081354.15306186863821576156.b4-ty@kernel.org> Date: Tue, 11 Aug 2026 22:33:44 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.13.0 On Tue, 11 Aug 2026 16:10:22 +0800, Jason Yang wrote: > The PHY register block is 64KB, so with a register stride of 4 the > last accessible register sits at offset 0xfffc. max_register names > 0x10000, one register past the end of the mapping: dumping the > registers through the regmap debugfs interface reads beyond the > ioremapped region and oopses on the unmapped page. The oops fires > with the regmap lock held, so later PHY operations deadlock. > > [...] Applied, thanks! [1/1] phy: rockchip-samsung-dcphy: fix out-of-range max_register commit: 4486e75ba647bd8b98fc1f053101b40caceeed4b Best regards, -- ~Vinod